Gun sights



SELARQH mm I Jan. 14, 1958 J. F. DAHLBERG GUN SIGHTS Filed Dec. 7, 1955 INVENTOR. & J nas Folke Dahlberg United States Patent GUN SIGHTS Jonas Folke Dahlberg, Seattle, Wash.

Application December 7, 1955, Serial No. 551,561

7 Claims. (Cl. 33-59) This invention relates to gun sights, and more particularly to forward or front sights especially adapted for use on rifles.

It is an object of the invention to provide an easilymounted, adjustable sight provided with a protective hood which remains attached to the sight and which can be folded down to inoperative position when not required for use.

Most of the protective hoods used on gun sights are adapted to be removed from the sight during the hunt, and as a result, often become mislaid or lost. The hood provided as a part of the present invention, is permanently attached to the sight and is arranged to be either elevated to protective position and held against dislodgement therefrom, or else can be folded down out of the way during actual use of the rifle.

It is another object of the invention to provide a sight of the character mentioned with means by which a precise rotative adjustment of the sight relatively to the barrel may be easily attained.

It is still another object of the invention to provide a sight which will be of sturdy construction; which can be accurately adjusted, and which will be provided with a permanently-attached, foldable, protective hood or shield.

With these, and other objects to be hereinafter set forth, in view, I have devised the arrangement of parts to be described and more particularly pointed out in the claims appended hereto.

In the accompanying drawing, wherein an illustrative embodiment of the invention is disclosed,

, Fig. 1 is a side elevational view of a gun sight constructed according to the invention;

Fig. 2 is a sectional view, taken substantially on the line 2-2 of Fig. 1, looking in the direction of the arrows;

Fig. 3 is a side elevational view of the gun sight as it appears when detached from the gun barrel and with the hood removed;

Fig. 4 is an end elevation view of the hood;

Fig. 5 is a top plan view of the gun sight;

Fig. 6 is a side elevational view of a portion of a gun barrel recessed to permit of the attachment of the improved gun sight;

Fig. 7 is a sectional view, taken substantially on the line 7-7 of Fig. 3, looking in the direction of the arrows and with the gun barrel, not included in Fig. 3, shown in section, and

Fig. 8 is a top plan view of a portion of the gun barrel, showing the recess and rib formed thereon.

Referring to the drawing, 1 indicates the forward or front end portion of a gun barrel to which the improved sight is adapted to be attached. To receive and properly hold the sight, the barrel is provided in its upper surface near its front end with a milled-out shallow recess 2 across which a longitudinally-extending rib 3 extends.

The mount for the gun sight includes a sleeve portion 4 adapted to encircle the gun barrel 1 over the recess 2 and rib 3. Preferably, but not necessarily, formed integrally with the sleeve portion 4 is an upstanding vertical flange 5, and mounted at the top of the same is the forward or front sight indicated at 6. Provided through the flange 5 is a transversely-extending, threaded opening 7 positioned over the rib 3. Two set screws, indicated respectively at 8 and 9, are threaded into the opening 7 from opposite ends thereof and may be threadably adjusted therein toward or away from one another and thus are adjustable toward or away from the rib 3 which enters into said opening 7 substantially as shown in Fig. 7. These set screws 8 and 9 are used forathe adipstrnp nt of the sight, enablinmo'b fotatively adjusted around the barrel *orfor"'afiy6tlii:m ejuiredadjiistfnent, one or set screws 3 and 9 is threadably backed away from the rib 3, while the other screw is threaded inwardly against the rib, thus urging the sleeve rotatively around the barrel in the required direction to the precise adjustment required. When such adjustment is secured, the first set screw is brought against the rib to maintain the adjustment. The concavity of the recess 7, and which conforms to the curvature of the periphery of the set screws 8 and 9, prevents the mounting from shifting longitudinally on the gun barrel 1.

The hood for the sight 6 consists of a loop-shaped member 10, thus having the resilient legs 11, each of which is provided at its free end with a boss 12. The hood 10 is permanently and pivotally mounted on the flange 5 by means of a pivot pin or rivet 13 which passes through the openings in the legs 11 of the hood and through the opening 20 through flange 5. The pivotal movement of the hood is such that the hood may be moved to assume the erected, upstanding, sight-protecting position shown in Fig. 1, at which time it extends over and shields the sight 6, or the hood may be moved to its folded-down position, shown in dotted lines in Fig. 1, and as also shown in Fig. 5, wherein it is positioned below and out of line of the sight 6.

When the hood is elevated, as shown in full lines in Fig. 1, the bosses 12, provided on the legs 11, engage in the opening 7, the resilience of the legs 11 holding these bosses in springy engagement with said opening, and preventing the hood from descending except under deliberate manual pressure imposed upon it. When it is desired to fold the hood down and out of the way during the hunt, the hood is merely depressed and caused to swing downwardly into the position shown in dotted lines in Fig. 1. When the hood is located in this lowered position, the bosses 12 engage in a notch 14 provided at the top of the flange 5 and located forwardly of the sight 6, so that inadvertent upward swing of the hood to its raised or elevated position is thereby prevented. It will be understood that by the application of slight manual force, the hood can be swung upwardly to its raised position, whereupon the bosses 12 will snap into engagement with the opening 7, thus holding the hood in its raised protective position whenever desired. It will be noted that when the hood is raised, the ends 15 of its legs 11 will seat against the shoulders 19 providedat the lower junction of the flange 5 and the sleeve portion 4 of the mounting. Similarly, when the hood is swung downwardly to its lowered or inoperative position, it can seat against these shoulders and against the top of the gun barrel, as clearly seen in dotted lines in Fig. 1.

From the foregoing the operation of the improved gun sight and attached hood therefor, will be apparent. Theft: sight is readily adjustable by rotative movement aroun the gun barrel by manipulation of the set screws 8 and? 9 as heretofore explained.

The hood 10, being permanently attached to the mount ing member cannot become detached and lost and constantly remains as a part of the sight and can be raised or lowered instantly as required, and will remain in either of such positions because of the locking engagement of the bosses 12 with either the opening 7 or the notch 14.

As will be noted from Fig. 3, the set screws 8 and 9 are provided with a cross slot 16 as well as with a central square or other non-round opening 17. This enables the screws to be easily turned by the end of a car key, for example, being inserted in the square opening 17 or by the disk end of the key, or a coin, being inserted in the slot 16.

Having described a single embodiment of the invention, it is obvious that the same is not to be restricted thereto, but is broad enough to cover all structures coming within the scope of the annexed claims.

What I claim is:

1. In a gun sight arrangement, a gun barrel provided in its top surface with a recess, a rib extending across said recess and disposed longitudinally of the barrel, a mounting member including a sleeve encircling the barrel above the recess, said mounting member having a transverse threaded opening extending through it, set screws threaded in said opening and adjustable therein toward or away from one another and toward or away from the rib to thereby obtain mtaiivaadjustment of the mounting member on the barrel, .alsight carried by the mounting mentbenmpaltood pivotally mounted on the mounting member and adapted to be raised to extend over the top of the sight, or to be swung downwardly to a position to extend forwardly and below the sight.

2. In a gun sight arrangement, a gun barrel, a rib provided thereon, a sleeve encircling the barrel, adjustment means carried by the sleeve and threadably operative against the rib to rotatively adjust the sleeve around the barrel, a substantially U-shaped hood, a sight carried 'by the sleeve, the hood being pivoted on the sleeve and pivotally movable to an erect position to extend over the top of the sight, said hood being also pivotal to a lowered position to uncover the sight, and means by which the hood is locked in either of the aforesaid positions.

3. In a gun sight arrangement, a gun barrel provided with a recess in its upper surface, a rib in said recess extending longitudinally of the barrel, a mounting member including a sleeve encircling the barrel over the recess and rib, said mounting member including a flange upstanding from the sleeve, said flange having an internally-threaded opening extending through it and registered with the recess, a pair of set screws threaded in the opening and adjustable therein toward or away from the rib, said screws engaging the recess and acting to prevent longitudinal shift of the mounting member along the barrel, a substantially U-shaped hood straddling the flange and pivoted thereto, whereby said hood can be swung to either an erect or lowered position, the mounting member being provided with a sight over which the hood is extended when the hood is in its erect position, and locking means by which the hood is maintained in either its erect or its lowered position.

4. In a gun sight arrangement, as provided for in claim 3, wherein said hood having resilient legs, and the locking means including bosses on said legs for engagement with the threaded opening when the hood is raised, and a shoulder on the forward part of the mounting against which the bosses engage when the hood is in its lowered position.

5. In a gun sight arrangement, a barrel having a rib, a sleeve fitted about the barrel and over the rib, the sleeve having a transverse opening, set screws threadably operative in said opening and selectively adjustable therein toward or away from the rib, a hood pivoted on the sleeve and manually movable to either raised or lowered position, a sight on the sleeve over which the hood extends when the hood is in its raised position, and means on the hood for co-operation with the opening to thereby lock the hood in its raised position.

6. In a gun sight as provided for in claim 5, means on the sleeve for co-operation with the means on the hood for locking the hood in its lowered position.

7. In a gun sight arrangement, a gun barrel provided with a recess in its upper surface, a rib in said recess extending longitudinally of the barrel, a mounting member including a sleeve encircling the barrel over the recess and rib, said mounting member including a vertical flange upstanding from the sleeve, said flange having an internally-threaded opening extending transversely through it and registered with the recess, a pair of set screws threaded in the opening and adjustable therein toward or away from one another and toward or away from the rib, said screws engaging the recess and acting by such engagement to prevent longitudinal shift of the mounting member along the barrel, a substantially U-shaped hood straddling the flange and pivoted thereto whereby it can be swung to either an erect or lowered position, the mounting member being provided with a sight over which the hood is extended when the hood is in its erect position, the hood including a pair of springy legs embracing the flange, bosses on said legs and means on the flange for engagement by said bosses to maintain the hood in either its erect or in its lowered position.

References Cited in the file of this patent UNITED STATES PATENTS 

